Steam surface condenser



J. F. H: AUDOUIN.

STEAM SURFACE CONDENS ER. APPLICATION FILED ue.13,1919.

1,372,926o Pa t d Mar. 1921.

4 SHEETS T 1.

J. F. H. AUDOUIN. STEAM SURFACE CONDENSER.

APPLICATION FILED AUG. 13, 1919.

1,373,926u Patent/ed Mar. 29,1921.

4 SHEETSSHEET 2.

70 HOT WE I. F. H. AUDOUIN.

STEAM SURFACE (JONDENSER.

IPPLICA'I'ION FILED AUG. 13, I9I9.

IPatntsd Mar. 29, 1921.

4 SHEETSSHEET 3.

.AUDOUIN.

STEAM SURFACE CONDENSER.

APPLlCATiON FILED AUG. 13, l9l9. 1 3723260 Patented Mar. 29, 1921.

4 SHEETS-SHEET 4.

UNITED PATENT '(DFFHQEQ JEAN FREDEBIG HORACE AUDO'UIN, OF PARIS, FRANCE.

- STEAM SURFACE CONDENSER.

Application filed August 13, 1919. Serial No. 317,190.

T 0 all w ham it may concern:

Be it known that I, JEAN Fnnonnro H. AUDOUIN, a citizen of the Republicof France, residing at Paris, France, and temporarily in the city,county, and State of New York, have invented certain new and usefulImprovements in Steam Surface Condensers, of which the following is aspeclfication.

The object of this invention is to obtain an increase of efiiciency andeconomy by such a construction of the condensing apparatus as willinvolve a reduction of pump power, compared with the pump power requiredin prior steam surface-condensing apparatus, and that such reduction ofpump power will be accompanied by an morease of efliciency; and that aless quantity of cooling water will be required. The diminution ofcooling water is of practical importance where cooling water is scarce.

In the accompanying drawings forming a part hereof and illustrating theprinciple of this invention in the best mode now known to me of applyingthat principle,

Figure 1 is an end View of a steam turbine construction in operativeconnection with my new steam surface-condenser equipment.

Fig, 2 is a side view of what is shown in Fig. 1. r

,Fig. 8 is a side elevation of the preferred form of a steamsurface-condenser forming part of my condenser equipment, portions beingbroken away to show interior parts. This view shows the constructionboth of my main and of my auxiliary surface-condenser, although the mainsurface-condenser will be very much larger in dimensions than theauxiliary surface-condenser.

Fig. i is a transverse cross-section of the steam surface-condenser atline e- L of Fig. 3.

The construction and mode of operation of my invention in thatembodiment thereof now shown, are as follows:

Escaped steam from the turbine casing 1 travels downwardly throughconduit 2 into the main steam surface-condenser casing 3 shown as ahorizontal cylinder having an interior vertical tube-plate 4 spacedapart from each outer end wall 5 of the casing 3 and forming a coolingwater chamber 6 between one end-wall and the thereto-adjacenttube-p-late, and forming anotherwater chamber 7 between the other endwall of the casing and the thereto-adjacent tubeplatc. The usualpartition 6 is shown in chamber 6. The tube-plates support the open endsof a series of longitudinally-extending water-tubes 8 for the coolingwater. The water tubes 8 are spaced apart both in the upward directionand transversely in each of two groups of water tubes, one group beingat one side and the other group being at the other side of a verticalplane passed through the longitudinal axis of the casing 3. The severallateral rows of water tubes in each group are arranged sothat each rowslants downwardly and outwardly, the inward water tubes of each group inthe vertical direction being spaced apart so as to form a preferably\l-shaped steam space 9 between each group of water tubes. The outermostwater tubes of the slanted rows thereof in each group are spaced apartfrom the adjacent side of the casing 3 by a distance which increases inthe downward direction so as to form at each outward side of each groupand below the lowest water tubes of each group, an approximatelyupstanding U-shaped clear chamber 10 for the water of condensationindicated by m in that chamber, and which water of condensation dripsfrom the water tubes upon outwardly and downwardly Slanted plates 11which are carried by the tube plates and which are severally locatedbetween each slanting row of the water tubes of each group of watertubes; these plates being out of contact with the under walls of thewater tubes in order to permit unrestricted lateral and outward anddownward drip or flow of the water of condensation falling from thewater tubes.

The coolingv water is pumped into the chamber 6 by pump 12 the dischargeside of which communicates by a conduit 13 with the chamber 6. Thecooling water so taken The greater part of the water of condensationcollected in said U-shaped chamber 10 of this main surface-condenser ispumped out by the condensate pump 15, the intake side of which is incommunication with said U-shaped chamber 10 by a pipe 16. But theconstantly-forming vapor from the water of condensation above thedeposit ofwater of condensation indicated by m, in the bottom of easing3, is continuously removed during the operation of the apparatus as awhole and during the time the water of condensation is forming, so thatthe volume of the water of condensation w to be removed by thecondensate pump is greatly reduced. Such removal of the vapor out ofeasing 3 is effected .from' an outlet at '17 which is shown at the upperportion of one side of said U-shaped chamber 10, a conduit 18 connectedwith said outlet 17 leading to the intake side of a vapor pump shown asa double-acting pump 19 which requires but little power to operate. Thedischarge side of the vapor pump 19 communicates by a conduit 20 withthe upper side of an auxilr ary surface-condenser of much smaller sizethan the main surface-condenser, the casing of this auxiliarysurface-condenser being indicated by 3 and being of the sameconstruction as the main surface-condenser, that is to say it has endchambers 21 and 22 each formed by an end wall 23 of the casing 3 and awater tube plate 24:, the water tube plates supportinglengthwiseextending water tubes 25 between which are interposedoutwardly and downwardly slanting plates 26 for conducting the water ofcondensation from the water tubes 25 into the U-shaped chamber 10 of theauxiliary surface-com denser.

Cooling water for the water tubes of the auxiliary condenser is takeninto its chamber 21 through a branch pipe 27 of the main coolingwatersupply pipe first mentioned. The deposit of water of condensation in thebottom of the U-shaped chamber of'this auxiliary surface-condenser, thatis in the chamber 10 of the casing 3 is removed through a conduit 28extending from the bottom portion of the casing 3 to the intake side ofthe condensate pump shown as driven by a motor M, the main cooling waterpump being shown driven by a motor M.

The air accumulated in the auxiliary condenser casing 3 is removedthrough a pipe 29 which connects with an air pump 30 of high power, thepipe 29 connecting with the casing 3 of the auxiliary surface-condenserat the upper portion of its U-shaped cham ber 10, comparable to I theconstruction shown in connection with the main surface condenser casing3. A motor M is shown for the double-acting vapor pump 19. The

air pump may be driven by any desired means.

Pump 19 is merely a vapor transfer pump and requires very little power.Pump 30 is an air pump which creates a high degree of vacuum in theauxiliary condenser and therefore in the main condenser.

By means i of: the auxiliary condenser, pumping of steam vapor from themain condenser is minimized; and the high-power air-pump has practicallyonly dry air to denser. The water of condensation in the 5 maincondenser has a temperature of about 200 Fahrenheit, and the pump 19 isto have a capacity sufficient for continual removal of the vapor inchamber 10 of the main condenser, and as such vapor is transferred intothe auxiliary condenser and therein condensed into water, the air pump30 may readily maintain the high vacuum in the chambers 10 and 10respectively of the two condensers. And because of the condensing effectof the auxiliary condenser, pump 19 may be a low-power pump. The systemdescribed has the further advantage of delivering through the dischargeport 15 of the condensate pump very hot condensate to a hot-well so thatthe condensate can be' readily used for boiler-feeding purposes ifdesired. Nozzle 15 may discharge to waste.

The air pump 30 discharges to the atmosphere through its dischargeopening at 30 What I claim is:

The combination of a main surface condenser with a low pressure vaportransfer pump; a smaller auxlhary surface condenser; a conduitconnection between a vapor space of the main surface condenser and theintake side of such vapor pump; a conduit connection between such pumpand a vapor space in the auxiliary surface condenser, the latter havinga cooling water exit; a condensate pump having its intake side inconduit connection with a bottom condensate space In the main surfacecondenser, the condensate pump havlng a hot condensate discharge port; aconduit connecting a condensate space of the auxiliary surface condenserwith the intake side of the condensate pump; a high pressure air pumphaving its intake side in conduit connection with a rarefied vapor spacein the auxiliary surface condenser, the air pump having a dischargeexit; and a cooling water pump in conduit connection with the coolingwater chamber in the main surface condenserand also in conduitconnection with a cooling of condensation falling from the water waterchamber in the auxiliary surface contubes, and conducting the same awayfrom denser, each condenser comprising upstandthe water tubes into thewater tube chamber m ing water tube plates, lengthwise extending betweenthe upstanding water tube plates.

5 water tubes, a cooling Water chamber at each In testimony whereof Ihave hereunto of its ends, and between the upper and under set my hand.

water tubes drip plates for receiving water JEAN E RI HORACE AUDOUIN.

